# libtmux.Server.lock_server

- **Module:** libtmux.Server
- **Package:** libtmux
- **Language:** Python
- **Kind:** method
- **Source:** https://github.com/tmux-python/libtmux/blob/9fdd083a8181a827889337b63cd4e6daea661a8c/src/libtmux/server.py#L831
- **Page:** https://libtmux.org/en/py/latest/reference/libtmux-server-lock_server/

```
libtmux.Server.lock_server(self) -> None
```

Lock the tmux server via ``$ tmux lock-server``.

Requires an attached client.

>>> with control_mode() as ctl:
...     server.lock_server()